please provide step by step an a brief wording explanations and include what formulas you are using thank you

Question 1 (20 points): Mark and Aaron are two individuals who one day discover a stream that flows lime juice instead of water. Mark and Aaron decide to bottle the lime juice and sell it. The marginal cost of bottling lime juice and the fixed cost to bottle lime juice are both zero. The market demand for bottled lime juice is given as: P = 90 - 0.25Q where Q is the total quantity of bottled lime juice produced and P is the market price of Bottled lime juice.5. At the output level in (c), what is the welfare loss? 6. Suppose that Mark and Aaron act as Cournot duopolists, what are the reaction functions for Mark and for Aaron? 7. In the long run, what level of output will Mark produce if Mark and Aaron act as Cournot duopolists? 8. In the long run, what will be the price of lime juice if Mark and Aaron act as Cournot duopolists? 9. Suppose that after Mark and Aaron have arrived at their long run equilibrium as Cournot duopolists, another individual, Patrick, discovers the streams. Patrick, who will sell no lime juice before its time, decides to bottle lime juices. There are now three Cournot firms producing at once. In the long run, what level of output will Mark produce